I've noticed an error in 4.1 beta 3 relating to radio groups that was NOT present in 4.0.7. As far as I can tell this doesn't relate to any of the API changes stickied at the top of this forum.

According to the documentation, a radiogroup can accept a column parameter which can be either
a) A float
b) An integer
c) An array of floats/integers where floats represent proportional widths and integers fixed widths.


When going with option c) the layout gets completely stuffed up (almost as if the columns were treating the floats as fixed widths).

Here is a screenshot demonstrating the problems under 4.1.0 beta 3 with FF.


Here is an example pulled from the radiogroup documentation (and modified slightly)

Ext.create('Ext.form.Panel', {
    title: 'RadioGroup Example',
    width: 300,
    height: 125,
    bodyPadding: 10,
    renderTo: Ext.getBody(),
        xtype: 'radiogroup',
        fieldLabel: 'Two Columns',
        // Arrange radio buttons into two columns, distributed vertically
        columns: [0.5, 80],
        vertical: true,
        items: [
            { boxLabel: 'Item 1', name: 'rb', inputValue: '1' },
            { boxLabel: 'Item 2', name: 'rb', inputValue: '2', checked: true},
            { boxLabel: 'Item 3', name: 'rb', inputValue: '3' },
            { boxLabel: 'Item 4', name: 'rb', inputValue: '4' },
            { boxLabel: 'Item 5', name: 'rb', inputValue: '5' },
            { boxLabel: 'Item 6', name: 'rb', inputValue: '6' }